Investigation of Multiscaled Pore Structure of Gas Shales using Nitrogen Adsorption and FE-SEM Imaging Experiments

Table 2

Pore structure parameters of the investigated marine shale samples.

Sample	Helium porosity (%)	Surface area (m^2/g)	Total pore volume (cm^3/g)	Pore diameter (nm)	Micropore volume percentage (%)	Mesopore volume percentage (%)	Macropore volume percentage (%)
JY41	1.81	2.79	0.0179	5.16	29.02	48.38	22.60
JY51	2.19	13.88	0.0190	4.83	30.87	50.66	18.47
JY55	3.90	15.68	0.0214	5.03	29.78	48.99	21.22
JY61	4.10	17.00	0.0214	4.52	33.18	49.35	17.48
JY71	4.49	18.96	0.0162	4.86	30.81	46.58	22.61
JY85	4.00	13.36	0.0229	4.75	31.48	47.18	21.34
JY91	3.90	19.26	0.0225	4.42	33.87	48.98	17.16
JY101	3.30	20.36	0.0210	4.47	33.65	46.41	19.94
JY105	2.90	18.82	0.0217	4.57	32.86	46.02	21.12
JY111	2.70	19.04	0.0203	3.95	38.08	46.06	15.86
JY115	4.80	20.56	0.0244	3.84	37.50	44.43	18.07
JY119	4.80	25.44	0.0273	3.67	40.88	51.23	7.89
JY121	3.64	29.71	0.0216	4.16	35.97	54.05	9.99